As Melissa Caddick's inquest draws to a close her husband is set to return for his fourth and likely final day of evidence after stopping twice due to his confusion.
Nearing the end of counsel's questions on Thursday, Mr Koletti faltered before rubbing his head.
"I'm exhausted mate, I just cannot focus again," he said.
"Your Honour I don't want to waste the court's time ... I don't see any relevance of this really," he said, before adding he was in the same spot as the day before.
"Confused," he added
But with the end in sight Mr Koletti pressed on, flatly denying any involvement in Ms Caddick's disappearance.
"Did you delay reporting her missing in order to give her time to try and go somewhere ... or end her own life?" counsel assisting Jason Downing SC said.
"I did not," Mr Koletti said.
Mr Koletti is expected to return for questions from other interested parties on Friday.
Melissa Caddick had 'narcissistic personality disorder'
Forensic psychiatrist Dr Kerri Eagle said she had assessed Ms Caddick as having a "narcissistic personality disorder" but emphasised the caveat of never having interviewed her, and purely basing her diagnosis on statements and other records.
Ms Caddick portrayed herself as a highly successful and affluent person and fed her self-esteem through the admiration of others, Dr Eagle told the inquest.
Facing exposure as a fraud and not appearing as brilliant as she projected, the intense humiliation could cause her to feel there was no other outlet than suicide, Dr Eagle said.
But from her assessments, the doctor did not believe she displayed psychopathic or sociopathic tendencies.
Mr Koletti maintains he had no inkling his wife was defrauding family and friends of millions of dollars, nor did he ask her why federal police or the corporate watchdog was suddenly searching their Sydney eastern suburbs home on November 11, 2020.
It was the last verified sighting of Ms Caddick before she vanished without a trace.
Ms Caddick's Ponzi scheme victims, mostly family and friends, lost $20-$30 million she used to fund her lavish lifestyle
In February 2021 her decomposing foot encased in a shoe washed ashore at Bournda Beach on the NSW south coast.
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